The shooter, a 19-year-old who graduated from the school last year, was killed in an exchange of gunfire and had left behind a note, police said.
at a St. Louis high school was armed with an AR-15-style rifle and what appeared to be more than 600 rounds of ammunition, Police Commissioner Michael Sack said Tuesday.
Harris, 19, graduated from the school last year. The FBI was assisting police in the investigation. Sack, speaking at a news conference, urged people to come forward when someone who appears to suffer from mental illness or distress begins "speaking about purchasing firearms or causing harm to others."Relatives of those killed mourned their losses.
"She was the girl I loved to see and loved to hear from. No matter how I felt, I could always talk to her and it was alright. That was my baby," Andre Bell said. The seven injured students are all 15 or 16 years old. All were listed in stable condition. Sack said four suffered gunshot or graze wounds, two had bruises and one had a broken ankle — apparently from jumping out of the three-story building.